package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import com.atguigu.gulimall.product.vo.AttrGroupVo;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.atguigu.gulimall.product.vo.SpuItemAttrGroupVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.service.AttrGroupService;
import org.springframework.util.StringUtils;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    private AttrService attrService;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPageCondition(Map<String, Object> params, Long catelogId) {
        QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<>();
        if (catelogId != 0L) {
            wrapper.eq("catelog_id", catelogId);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((obj) -> {
                obj.eq("attr_group_id", key).or().like("attr_group_name", key);
            });
        }
        IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params), wrapper);
        return new PageUtils(page);
    }

    @Override
    public List<AttrGroupVo> getGroupsWithAttrsByCatId(Long catelogId) {
        List<AttrGroupEntity> groups = this.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        if (groups != null && groups.size() != 0) {
            List<AttrGroupVo> groupVos = groups.stream().map(group -> {
                AttrGroupVo attrGroupVo = new AttrGroupVo();
                BeanUtils.copyProperties(group, attrGroupVo);
                List<AttrEntity> attrs = attrService.getAttrByGroupId(group.getAttrGroupId());
                attrGroupVo.setAttrs(attrs);
                return attrGroupVo;
            }).collect(Collectors.toList());
            return groupVos;
        }
        return new LinkedList<>();
    }

    @Override
    public List<SpuItemAttrGroupVo> getGroupsWithAttrsBySpuId(Long spuId, Long catalogId) {
        return this.getBaseMapper().getGroupsWithAttrsBySpuId(spuId,catalogId);
    }

}